Common use ptfe membrane filter 0.22 um for hplc LAB SAFETY SUPPLY Syringe Filter, 13 mm Membrane Dia., 0.22 um Pore Size, Hydrophobic PTFE Filter Material Item Syringe Filter Membrane Dia. 13 mm Pore Size 0.22 um Capacity 10mL Filter Material Hydrophobic PTFE Housing Material Polypropylene Inlet Connection Luer-lok(TM) Outlet Connection Luer